MOMENTUM Wireless M3AEBTXL | 1
MOMENTUM Wireless
Around-ear headphones
M3AEBTXL
Instruction manual
Use the search function, the navigation (left) or the following links:
Start
“Product overview”
“Getting started”
“Using the headphones”
“FAQ/If a problem occurs ...”
“Specifications”
Sennheiser electronic GmbH & Co. KG
Am Labor 1
30900 Wedemark
Germany
www.sennheiser.com
Version: 01/20 A02
Important safety instructions
2 | MOMENTUM Wireless M3AEBTXL
Important safety instructions
▷ Read this instruction manual carefully and completely
before using the product.
▷ Always include this instruction manual when passing the product
on to third parties.
▷ Do not use the product if it is obviously defective or makes loud,
unusual (whistling or beeping) noise.
▷ Only use the product in environments where Bluetooth wireless
transmission is permitted.
Preventing damage to health and accidents
▷ Protect your hearing from high volume levels. Permanent
hearing damage may occur when headphones are used
at high volume levels for long periods of time. Sennheiser
headphones sound exceptionally good at low and medium volume
levels.
▷ The product generates stronger permanent magnetic
fields that could cause interference with cardiac pace
-
makers, implanted defibrillators (ICDs) and other
implants. Always maintain a distance of at least 3.94"/10 cm
between the product component containing the magnet and the
cardiac pacemaker, implanted defibrillator, or other implant.
▷ Keep the product, accessories and packaging parts out of reach
of children and pets to prevent accidents. Swallowing and chok
-
ing hazard.
▷ Do not use the product in an environment that requires your spe-
cial attention (e.g. in traffic or when performing skilled jobs).
Especially the product’s active noise cancellation can make ambi
-
ent noise inaudible or drastically change the perception of acous-
tic warning signals.
Preventing damage to the product and malfunctions
▷ Always keep the product dry and do not expose it to extreme tem-
peratures (hairdryer, heater, extended exposure to sunlight, etc.)
to avoid corrosion or deformation. The normal operating tempera
-
ture is from 0 °C to 40 °C/32 °F to 104 °F.
▷ To avoid loud, unusual (whistling or beeping) noise and to ensure
proper noise cancellation, do not cover the microphone openings
of the active noise cancellation circuitry located on the outside of
the ear cups.
▷ Use only attachments/accessories/spare parts supplied or rec-
ommended by Sennheiser.
▷ Clean the non-leather parts of the product only with a soft, dry
cloth
Caring for leather parts
▷ Gently wipe leather parts periodically with a clean, soft cloth
dampened with water.
▷ Do not use leather polish, detergents or harsh soaps to clean
leather parts.
▷ Do not store the headphones in a damp or humid environment.
Important safety instructions
MOMENTUM Wireless M3AEBTXL | 3
Safety instructions for the lithium polymer rechargeable battery
Notes on data collection and processing and on firmware updates
This product stores individual settings such as the volume and the
Bluetooth addresses of paired devices. This data is required for the
operation of the product and is not transferred to Sennheiser or com
-
panies commissioned by Sennheiser and is not processed.
This product collects usage data such as switch-on cycles and oper-
ating times (e.g. music playback, ANC programs, EQ settings), which
is transferred to Sennheiser or companies commissioned by Senn
-
heiser via the “Sennheiser Smart Control” app in encrypted and
anonymous form, and stored and processed there. The data is pro
-
cessed to determine statistical parameters for the purpose of pro-
viding and maintaining functions and for product improvements. At
no time can reference be made to a specific person. If this data is not
to be transferred and processed, you can object to its use in the “Pri
-
vacy” section of the app menu.
Using the “Sennheiser Smart Control” app, you can update the firm-
ware of the product for free via an Internet connection. If the device
on which the app is installed is connected to the Internet, the follow
-
ing data is automatically transferred to and processed by Sennheiser
servers in order to provide and transfer suitable firmware updates:
hardware identifier, hardware revision number, firmware version of
the product, operating system type (Android, iOS) and version, ver
-
sion of the app. The data will only be used as specified and will not
be stored permanently. If you do not want this data to be transferred
and processed, do not connect to the Internet.
WARNING
If abused or misused, the rechargeable batteries may leak.
In extreme cases, they may even present a risk of:
• heat generation,
• fire development,
•explosion,
•smoke or gas development.
Only use rechargeable batteries and chargers
recommended by Sennheiser.
Only charge the product / rechargeable batteries at
ambient temperatures between 0 °C to 40 °C/32 °F to
104 °F.
Do not heat the product / rechargeable batteries above
60 °C/140
°F. Avoid exposure to sunlight and do not
throw the product / rechargeable batteries into fire.
When not using the product / rechargeable batteries for
extended periods of time, charge them regularly (about
every three months).
Switch rechargeable battery-powered products off after
use.
Dispose of defective products with built-in rechargeable
batteries at special collection points or return them to
your specialist dealer.
Important safety instructions
4 | MOMENTUM Wireless M3AEBTXL
Intended use/Liability
These headphones have been designed as an accessory for Blue-
tooth compliant devices. They are intended for wireless audio com-
munication such as music playback and phone calls via Bluetooth
wireless technology.
It is considered improper use when the product is used for any appli-
cation not named in the corresponding product documentation.
Sennheiser does not accept liability for damage arising from misuse
or improper use of this product and its attachments/accessories.
Sennheiser is not liable for damages to USB devices that are not con-
sistent with the USB specifications.
Sennheiser is not liable for damages resulting from the loss of con-
nection due to flat or overaged rechargeable batteries or exceeding
the Bluetooth transmission range.
Before putting into operation, please observe the respective coun-
try-specific regulations.
Package contents
MOMENTUM Wireless M3AEBTXL | 5
Package contents
Online you can find:
• this detailed instruction manual and additional information
(
www.sennheiser.com/download)
• the Sennheiser Smart Control app for configuring the head-
phones and for additional functions (www.sennheiser.com/
smartcontrol)
MOMENTUM Wireless M3AEBTXL around-ear head-
phones
USB cable with USB-C connectors,
length approx. 1.2 m
USB adapter
USB-C to USB-A connector
Analog audio cable with 3.5 mm jack plug,
length approx. 1.4 m
Carry case
Quick guide
Safety guide
A list of accessories can be found on the MOMENTUM Wireless
product page at www.sennheiser.com.
Contact your local Sennheiser partner: www.sennheiser.com >
“Service & Support”.
Product overview
6 | MOMENTUM Wireless M3AEBTXL
Product overview
Sheepskin headband
LED
Active noise cancellation (ANC) switch
On/off, Transparent Hearing mode
NFC antenna
Volume + button (volume up)
Multi-function button for music and call functions
Volume - button (volume down)
External microphones for active noise cancellation ANC
OFF
ON
1
2
3
4
5
6
7
8
8
9
0A
B
D
D
D
C
E
LR
Product overview
MOMENTUM Wireless M3AEBTXL | 7
Overview of the LED display
Voice assistant button;
pressing for 5 seconds activates the Bluetooth pairing
mode
Input for USB-C;
for charging and music playback/data connection
Input for analog audio cable;
when a cable is connected, flight mode is activated/Blue-
tooth is deactivated
Ear cups (steplessly adjustable) with internal microphones
for active noise cancellation ANC
Sheepskin ear pads
Ear cup joint with on/off function for the headphones
Microphones for phone calls
LED Meaning; the headphones...
lights up green
for approx.
2
seconds
... switch on
lights up blue
for approx. 2
seconds
... are connected to a device via Blue-
tooth
lights up red
for approx.
2
seconds
... are not connected to a device via
Bluetooth or the connection has been
lost
flashes red-
blue for
approx. 5 min
-
utes
... are in Bluetooth pairing mode
flashes green ... indicate an incoming call
flashes red
quickly
... have a very low battery level
flashes red 3x ... switch off
pulses red
... are being charged (charge level is
very low)
pulses yellow ... are being charged
lights up green ... are fully charged
flashes red
A charging error/battery error has
occurred (>
32)
If the LED does not light up immediately during charging, clean
the charging contacts and charge the headphones until the
LED lights up again (>
10).
Product overview
8 | MOMENTUM Wireless M3AEBTXL
Notes on voice prompts
The headphones output voice prompts for various functions (see
examples below). Using the Smart Control app, you can change the
language of the voice prompts, choose between voice prompts and
beep sounds, or deactivate the status messages with a few excep
-
tions (e.g. rechargeable battery is empty).
Notes on vibration prompts
The headphones output vibration prompts for the following func-
tions.
Voice prompt Meaning/headphones
“Power on” switched on
“Power off” switched off
“Device (1) (2) connected” are connected to device 1 or 2
“No connection” not connected via Bluetooth
“Pairing” are in Bluetooth pairing mode
“Pairing successful” Bluetooth pairing successful
“No device found” cannot connect to a paired device
“Volume min” volume set to minimum
“Volume max” volume set to maximum
“Call rejected” incoming call rejected
“Call ended” call ended
“Mute on” Microphone is muted, active call is
put on hold
“Mute off” Microphone is reactivated
“More than xx % battery left” Rechargeable battery has the
stated charge level
“Recharge headset” Rechargeable battery is empty.
Recharge the headphones.
Event Comment
Incoming call Headphones vibrate only when not
put on.
Locating the headphones
using the TILE app
Using the TILE app you can make
the registered MOMENTUM 3
vibrate to locate it when it is nearby
(>
28).
Getting started
MOMENTUM Wireless M3AEBTXL | 9
Getting started
1. Charging the rechargeable battery
The headphones' rechargeable battery is not fully charged upon
delivery. Before using the headphones for the first time, charge the
rechargeable battery for a complete charging cycle without interrup
-
tion (> 10).
2. Installing the Smart Control app on your
smartphone
The Sennheiser Smart Control app allows you to use all functions
and settings of the headphones and to e.g. adjust the sound to your
liking using the equalizer (>
15).
3. Connecting the headphones to a Bluetooth
device
Connect the headphones to your smartphone via Bluetooth (> 11).
4. Putting the headphones on and adjusting the
headband
For good sound quality and best possible wearing comfort, the head-
band can be adjusted to properly fit your head (> 19).
USB-CUSB-C
“Sennheiser Smart Control”
5s
Hold
Using the headphones
10 | MOMENTUM Wireless M3AEBTXL
Using the headphones
Information on the rechargeable battery
and the charging process
The headphones have a built-in rechargeable battery. A complete
charging cycle takes approx. 3 hours. The headphones provide 1.5
hours of playback time with a charging time of approx. 10 minutes.
Before using the headphones for the first time, charge the recharge
-
able battery for a complete charging cycle without interruption.
When the headphones are being charged, the LED lights up (> 7).
When the battery charge drops to a critical level, a voice prompt asks
you to recharge the headphones (“Recharge headset”).
Sennheiser recommends to charge the headphones using the sup-
plied USB-C cable and a compatible standard USB-C power supply
unit.
While the headphones are being charged, you can still listen to
music or make phone calls. In this case, however, the charging time
may be longer.
Charging the headphones' rechargeable
battery
1. Connect the USB-C connector of the USB cable to the USB-C
socket of the headphones.
3 HRS
Pulsing
USB-A
USB-C
USB-C
USB-C
1
2
USB-C USB Micro-B
Using the headphones
MOMENTUM Wireless M3AEBTXL | 11
2. Connect the other USB-C connector to a corresponding socket of
a USB power source (* to be ordered separately). Make sure that
the USB power source is connected to the power supply system.
The charging process of the headphones begins. The LED dis-
plays the charge status:
Connecting the headphones to a
Bluetooth device
To be able to use the Bluetooth connection, you must register both
devices (headphones and e.g. smartphone) once. This process is
called pairing.
If your Bluetooth device supports auto pairing via NFC (Near Field
Communication), the connection is automatically established.
If your Bluetooth device does not support NFC, use the device set-
tings for the pairing process.
If operation differs from the steps mentioned, also refer to the
instruction manual of the Bluetooth device you are using.
Information on the Bluetooth wireless
connection
The headphones are compatible with Bluetooth 5.0.
If your audio source supports one of the following high-resolution
audio encoding methods, music is automatically played in high audio
quality: aptX, aptX LL or AAC. Otherwise the headphones will play
your music in normal audio quality (SBC).
Paired devices establish the Bluetooth wireless connection immedi-
ately after switch-on and are ready for use.
On switch-on, the headphones automatically try to connect to the
last two connected Bluetooth devices. The headphones can save the
connection profiles of up to eight Bluetooth devices with which they
have been paired.
LED Meaning
pulses red Rechargeable battery is being charged
(charge level is very low)
pulses yellow Rechargeable battery is being charged
lights up
green
Rechargeable battery is fully charged
flashes red A charging error/battery error has
occurred (>
32)
If you do not have a USB power source with a USB-C socket,
use the USB adapter (supplied) for connection to a USB-A
socket.
When you switch on the headphones for the first time, they
automatically switch to pairing mode.
Using the headphones
12 | MOMENTUM Wireless M3AEBTXL
If you pair the headphones with the ninth Bluetooth device, the saved
connection profile of the least used Bluetooth device will be over
-
written. If you want to re-establish a connection with the overwritten
Bluetooth device, you have to pair the headphones again.
Paired and connected Bluetooth device
Paired Bluetooth device (currently not connected)
Using the headphones
MOMENTUM Wireless M3AEBTXL | 13
Pairing the headphones with a Bluetooth
device using NFC
1. Activate NFC on your Bluetooth device.
2. Switch the headphones on (> 16).
3. Place your Bluetooth device close (less than 3 cm) to the NFC
antenna in the right ear cup of the headphones.
You hear the voice prompt “Pairing” and the LED flashes blue and
red.
4. Click “Yes” if a confirmation dialog for Bluetooth pairing appears
on the screen of your Bluetooth device (this step may vary
depending on your Bluetooth device).
If pairing was successful, you hear the voice prompts “Pairing
successful” and “Device (1) connected”. The LED lights up blue for
2 seconds.
< 3 cm
Pairing
ON
ON
1 2
3 4
ON
MOMENTUM 3
Connected
2s
“Pairing“
“Device (1)
connected“
“Pairing
successful“
ONOFF
Click
Using the headphones
14 | MOMENTUM Wireless M3AEBTXL
Pairing the headphones with a Bluetooth
device
1. Switch the headphones on (> 16) and place them close to the
Bluetooth device (max. 20 cm).
2. Press and hold the voice assistant button for 5 seconds until you
hear the voice prompt “Pairing”.
The LED flashes blue and red. The headphones are in pairing
mode.
3. Activate Bluetooth on your Bluetooth device.
4. Via the menu of your Bluetooth device, start the search for new
Bluetooth devices.
All active Bluetooth devices in the proximity of your Bluetooth
device are displayed.
5. From the list of found Bluetooth devices, select “MOMENTUM 3”.
If necessary, enter the default pin code “0000”.
If pairing was successful, you hear the voice prompts “Pairing
successful” and “Device (1) connected”. The LED lights up blue for
2 seconds.
If no connection is established within 5 minutes, pairing mode
is terminated and the headphones switch to standby mode. If
necessary, repeat the steps described above.
Pairing
1
2 3 4 5
Connected
2s
“Pairing“
“Device (1)
connected“
“Pairing
successful“
< 20 cm
ON
OFF
Click
***
MOMENTUM 3
***
MOMENTUM 3
Keyword: 0000
Menu
Bluetooth on
Bluetooth off
Menu
Add Device
5s
Hold
Using the headphones
MOMENTUM Wireless M3AEBTXL | 15
Disconnecting the headphones from a
Bluetooth device
▷ Via the menu of your Bluetooth device, disconnect the connection to
the headphones.
The headphones are disconnected from the Bluetooth device.
You hear the voice prompt “Device (1) disconnected”. The head
-
phones switch to standby mode.
Installing the Smart Control app
To make full use of all the settings and functions of the headphones,
you need to have the free Sennheiser Smart Control app installed on
your smartphone.
Download the app from the App Store or Google Play and install it on
your smartphone. Alternatively, you can use your smartphone to
scan the following QR code or to call up the following Internet site:
www.sennheiser.com/smartcontrol
▷ Connect your smartphone to the headphones via Bluetooth (> 11).
▷ Start the Smart Control app.
The Smart Control app recognizes the headphones and activates
all available settings and functions.
To delete the Bluetooth pairing list of the headphones, > 33.
For further functions of the headphones, you require the apps
of the respective manufacturers:
• TILE app (> 28)
• Amazon Alexa app (> 26)
Using the headphones
16 | MOMENTUM Wireless M3AEBTXL
Switching the headphones on
▷ Unfold the two ear cups (right and left).
The joints click into place. The headphones switch on. You hear
the voice prompt “Power on” and the LED lights up green for
2
seconds.
If a paired Bluetooth device is within the transmission range, you
hear the voice prompt “Device (1) connected”. The LED lights up
blue for 2 seconds.
WARNING
Danger of hearing damage due to high volume levels!
Listening at high volume levels can lead to permanent
hearing defects.
▷ Before putting the headphones on, adjust the volume
to a low level (>
20).
▷ Do not continuously expose yourself to high volume
levels.
WARNING
Risk of getting caught when unfolding the ear cups!
When the ear cups are unfolded, you may get caught in
the joints and injure yourself.
▷ When unfolding the ear cups, keep sufficient distance
to the joints so that no skin is caught in the joints.
Make sure that Bluetooth is already activated on your Blue-
tooth device when switching on the headphones.
If Bluetooth is activated and the headphones cannot find a
paired Bluetooth device within a few minutes, you hear the
voice prompt “No device found”. The LED lights up red for 2
seconds. The headphones switch to standby mode.
Connected
No connection
“Device (1)
connected“
“No device
found“
“Power on“
OFF
Click
ON
Power on
2s
2s
2s
Using the headphones
MOMENTUM Wireless M3AEBTXL | 17
Unfolding the ear cups without switching
the headphones on
▷ Press the multi-function button while unfolding the ear cups and
hold the button for at least 4 seconds.
The headphones remain switched off. You hear the voice prompts
“Power off”. The LED lights up red for 2 seconds.
To switch the headphones on again:
▷ Fold both ear cups inward and unfold them again.
The headphones switch on normally (> 16).
Switching the headphones on without
Bluetooth wireless connection (flight
mode)
▷ Press the voice assistant button while unfolding the ear cups and
hold the button for at least 4 seconds.
The headphones switch on without Bluetooth wireless connec-
tion. You hear the voice prompts “Power on” and “No connection”.
The LED lights up green for 2 seconds and then red for 2 seconds.
“Power off“
Click
OFF
2s
4s
Hold
If you connect the analog audio cable to the headphones, the
flight mode is also activated (Bluetooth wireless connection is
off) (>
28).
OFF
“Power on“
“No connection“
Click
ON
2s 2s
4s
Hold
Using the headphones
18 | MOMENTUM Wireless M3AEBTXL
Switching the headphones off
▷ Fold the left ear cup and then the right ear cup inward over a
slight resistance of the joint.
You hear the voice prompt “Power off” and the LED display
flashes red 3x. The headphones switch off.
When you remove the headphones and place them on your
shoulders, the headphones switch to standby mode to save
power. When you put the headphones on again, the standby
mode is deactivated.
When the headphones are switched off, keep a minimum dis-
tance of 10 cm between the headphones and strong magnets,
as the headphones may switch on unintentionally.
“Power off“
1
2
OFF
3x
Using the headphones
MOMENTUM Wireless M3AEBTXL | 19
Putting the headphones on and adjusting
the headband
For good sound quality and best possible wearing comfort, the head-
band can be adjusted to properly fit your head.
▷ Wear the headphones so that the headband runs over the top of
your head. The markings
R for the right side and L for the left side
can be found in the ear cups.
▷ Move the ear cups up or down the headband slider until:
– your ears are comfortably covered by the ear pads,
– you feel even, gentle pressure around your ears,
– a snug fit of the headband on the head is ensured.
For optimal sound quality and active noise cancellation ANC, the
ear pads must completely surround your ears.
Retrieving information on the battery
charge status
When the headphones are connected to your Bluetooth device, the
battery charge status can be displayed on the screen of your smart
-
phone (depending on the device and operating system used).
The Smart Control app also displays the battery charge status.
On the headphones, you can check the battery charge status via the
voice prompts (not possible during a call):
▷ Press and hold the multi-function button for 2 seconds.
Voice prompt Meaning
“Recharge headset” The rechargeable battery is empty.
Recharge the rechargeable battery (>
10).
In addition, the LED flashes red.
“More than xx % battery
left”
The remaining battery charge is
displayed as a percentage.
"recharge
headset"
„More than xx %
battery left“
2s
Hold
Using the headphones
20 | MOMENTUM Wireless M3AEBTXL
Adjusting the volume
You can adjust the volume for music, voice prompts, and phone calls.
▷ If you are playing music or are on a call: Press the volume + or -
button to increase or reduce the volume.
When the minimum or maximum volume is reached, you hear the
voice prompt “Volume max” or “Volume min”.
Information on active noise cancellation
ANC
Due to its closed design, the headphones offer effective passive iso-
lation from ambient noise.
In addition, the headphones have an active noise cancellation (ANC)
function, which allows you to reduce ambient noise to a minimum.
Even when ANC is activated, your headphones' sound quality is
always at its best.
You can activate or deactivate ANC when the headphones and your
audio source are connected via Bluetooth, the USB cable, or the
audio cable (provided that the battery is sufficiently charged).
If you want to create a quiet space in a noisy environment, you can
simply use the headphones – without cable and disconnected from
any Bluetooth device – with ANC activated (>
17).
The Smart Control app allows you to select different ANC modes that
offer the optimal settings depending on the application/situation.
For example, low-frequency noise can be suppressed, wind noise
can be minimized or a possible feeling of pressure on the ears can be
avoided.
WARNING
Danger of hearing damage due to high volume levels!
Listening at high volume levels can lead to permanent
hearing defects. Toggling between the audio sources
may cause enormous volume jumps that can perma
-
nently damage your hearing.
▷ Before putting the headphones on and before tog-
gling between audio sources, adjust the volume to a
low level.
▷ Do not continuously expose yourself to high volume
levels.
You can also adjust the volume using the connected Bluetooth
device.
„Volume max“
„Volume min“
Using the headphones
MOMENTUM Wireless M3AEBTXL | 21
Notes on active noise cancellation
• Continuous uniform noise, such as motor or fan noise, is particu-
larly well suppressed.
• Speech or high-frequency noise is significantly reduced, but can
remain perceptible.
• In very quiet environments, slight noise may occur. In this case,
deactivate ANC.
• If unusual (whistling or beeping) noise occurs, take the head-
phones off and put them on again. Make sure that the ear cups
properly fit around your ears.
• To avoid loud, unusual (whistling or beeping) noise and to ensure
proper noise cancellation, do not cover the microphone openings
of the active noise cancellation circuitry located on the outside of
the ear cups.
Activating/deactivating the active noise
cancellation ANC
▷ Slide the ANC switch to the middle position to activate ANC.
The ANC mode set in the Smart Control app is activated (> 21).
▷ Slide the ANC switch to the upper position to deactivate ANC.
Setting the ANC mode
To make full use of all the ANC settings and functions of the head-
phones, you require the Smart Control app (> 15).
▷ In the Smart Control app, select the desired ANC mode:
If you are not wearing the headphones, ANC is automatically
paused to save battery power.
ON
OFF
Using the headphones
22 | MOMENTUM Wireless M3AEBTXL
* default setting
Listening of ambient noise or
conversations - activating/deactivating
the Transparent Hearing function
The Transparent Hearing function allows you to still hear ambient
noise or to communicate without having to remove the headphones
when ANC is activated. This allows you to hear e.g. announcements
in the train or aircraft or to have short conversations.
▷ Slide the ANC switch to the lower position and release it to acti-
vate Transparent Hearing.
You hear two beeps. The Transparent Hearing mode set in the
Smart Control app is activated (>
22). You can hear ambient
sounds without having to remove the headphones.
To deactivate Transparent Hearing:
▷ Slide the ANC switch to the lower position again and release it.
You hear one beep. The ANC mode set in the Smart Control app
is activated (>
21).
Adjusting the Transparent Hearing
ANC mode
Reduction of low-frequency
noise and background noise
Used ANC
microphones in the
ear cups
Application
“Max” * maximum reduction directed toward the
ear and directed
toward the outside
in noisy environments such
as aircraft/traffic
“Anti Wind” slight reduction without
disturbing wind or
movement noise
directed toward the
ear
outdoors and on the go
“Anti Pressure” comfortable reduction
without feeling pressure in
the ears
directed toward the
outside
at home or in a hotel
ON
OFF
Using the headphones
MOMENTUM Wireless M3AEBTXL | 23
function
To be able to fully use Transparent Hearing, you require the Smart
Control app (>
15).
▷ Select the desired Transparent Hearing function in the Smart
Control app:
* default setting
Listening to music using the headphones
You can listen to music when the headphones and your audio source
are connected via Bluetooth (>
11), the USB cable (> 29) or the audio
cable (> 28).
Controlling music playback
The following music playback functions are only available when the
headphones and the device are connected via Bluetooth. Some
smartphones or music players may not support all functions.
Playing/pausing music
▷ Press the multi-function button 1x.
Playing the next track
▷ Quickly press the multi-function 2x.
Transparent Hearing Description
“Keep music playing and
mix with ambient sound”
The audio playback (e.g. music)
continues and is mixed with ambient
sounds.
“No music playback, only
ambient sound”
The audio playback (e.g. music) is
muted and you hear only ambient
sounds.
Multi-function button Function
Press 1x Plays or pauses music
If music playback does not start:
• Check if Transparent Hearing is activated (> 22) and deacti-
vate the function if necessary.
• Start the music playback app on your Bluetooth device.
Using the headphones
24 | MOMENTUM Wireless M3AEBTXL
Playing the previous track
▷ Quickly press the multi-function 3x.
Fast-forwarding a track
▷ Quickly press the multi-function button 2x and keep it pressed
until you have fast-forwarded to the desired position in the track.
Rewinding a track
▷ Quickly press the multi-function button 3x and keep it pressed
until you have rewound to the desired position in the track.
Making phone calls using the headphones
The following call functions are only available when the headphones
and smartphone are connected via Bluetooth. Some smartphones
may not support all functions.
Making a call
▷ Dial the desired number on your smartphone.
If your smartphone does not automatically transfer the call to the
earphones, select “MOMENTUM 3” as the audio source on your
smartphone (see the instruction manual of your smartphone if
necessary).
Accepting/rejecting/ending a call
If your headphones are connected to a smartphone and you receive
a call, you hear a ring tone in the headphones.
If you are playing music when you receive a call, the music pauses
until you end the call.
If you have not put on the headphones and receive a call, they will
vibrate.
Multi-function button Function
Press 2x Plays the next track in the playlist
Multi-function button Function
Press 3x Plays the previous track in the playlist
Multi-function button Function
Press 2x and
hold
Fast-forwards a track
Multi-function button Function
Press 3x and
hold
Rewinds a track
Using the headphones
MOMENTUM Wireless M3AEBTXL | 25
Muting the microphone
To mute the headphones' microphone during a call:
▷ Press the volume - button for 2 seconds.
The microphone is muted. You hear the voice prompt “Mute on”.
To continue the call and reactivate the microphone:
▷ Press the volume - or the volume + button for 2 seconds.
The microphone is reactivated. You hear the voice prompt “Mute
off”.
Multi-function button Function
Press 1x
Accepts a call
Press 1x
Ends a call
Voice prompt “Call ended”
Hold for 1 sec
Rejects a call
Voice prompt “Call rejected”
Press 2x
Redials the last number
Voice prompt “Redial”
(only when music playback is NOT
active)
Press 1x
Accepts an incoming call and ends
the active call
Press 2x
Puts the active call on hold and
accepts an incoming call
Press 2x
Toggles between active call and call
on hold
„Mute on“
„Mute off“
2s
Hold
2s
Hold
OR
Using the headphones
26 | MOMENTUM Wireless M3AEBTXL
Putting an active call on hold
If you remove the headphones during a call, the call is automatically
put on hold and the microphone is muted. You hear the voice prompt
“Mute on” every 30 seconds.
To continue the call and reactivate the microphone, simply put the
headphones on again. You hear the voice prompt “Mute off”.
Using the voice assistant/voice dialing
▷ Press the voice assistant button once.
The available voice assistant of your smartphones is activated (*
depending on the system or app on your smartphone: Siri, Google
Assistant, ...).
▷ Ask the voice assistant your question or make a request.
To cancel the voice assistant/voice dialing:
▷ Press the voice assistant button 1x.
Using Amazon Alexa as voice assistant
To use Amazon Alexa as a voice assistant, you have to add the head-
phones to the Amazon Alexa app as a device once and then activate
Alexa via the settings of the
Sennheiser Smart Control app:
1. Make sure the headphones are connected to your smartphone via
Bluetooth (>
11).
2. Start the Sennheiser Smart Control app (> 15).
3. In the Smart Control app, open the settings for your headphones
and activate Amazon Alexa for the voice assistant button.
4. Start the Amazon Alexa app and select “Add Device”.
5. From the list of found devices, select “MOMENTUM 3”.
You can now use Amazon Alexa by pressing the voice assistant
button on your headphones.
If you want to use Amazon Alexa as your voice assistant, you
have to configure the headphones once (>
26).
ON/OFF
Siri, Google Assistent, ...
1x
PRESS
Using the headphones
MOMENTUM Wireless M3AEBTXL | 27
Using the Smart Pause function
The headphones are equipped with a carrying sensor that automati-
cally detects whether the headphones are worn or removed from
your ears. You can use the following functions:
• ANC is deactivated when you remove the headphones and acti-
vated when you put them on again.
• Music playback pauses when you remove the headphones and
continues when you put them on again.
• A call is accepted when you put on the headphones; a call is
muted when you remove the headphones during a call and
resumed when you put them on again.
You can also deactivate the function via the Smart Control app.
Adjusting sound effects/the equalizer
To be able to use the sound effects/equalizer, you require the Smart
Control app (>
15).
▷ In the Smart Control app, select the desired sound effects via the
equalizer.
The sound effects are stored in the headphones. These sound
settings are active even without using the Smart Control app, i.e.
when you are using another Bluetooth device.
Amazon Alexa
Headphone
settings
Momentum 3
Add Device
1 2 3
4 5
ON OFF
Using the headphones
28 | MOMENTUM Wireless M3AEBTXL
Setting the voice prompts/beep sounds
To be able to set the voice prompts and beep sounds, you require the
Smart Control app (>
15).
▷ You can change the language of the voice prompts, choose
between voice prompts and beep sounds, or deactivate the status
messages with a few exceptions (e.g. rechargeable battery is
empty).
Using TILE to locate the headphones
The TILE function allows you to locate the headphones at any time.
If, for example, you have misplaced the headphones, the TILE func
-
tion allows you to find them again quickly. For this purpose, the head-
phones and the smartphone (with the installed TILE app) use Blue-
tooth frequencies.
▷ Create a TILE user account and register the MOMENTUM Wire-
less via the TILE app.
Using the audio cable/activating flight
mode
If you connect the audio cable, flight mode is activated and the Blue-
tooth wireless connection is deactivated.
Use the audio cable when:
• wireless transmission is not allowed, e.g. during aircraft take-off
and landing,
• the headphone's rechargeable battery is empty,
• your audio source doesn't offer a Bluetooth connection.
The functions for controlling music and/or calls or voice assistance
are not possible. The active noise cancellation ANC can be fully used
provided that the rechargeable battery is charged.
You can also activate the flight mode without connecting an audio
cable to the headphones (>
17).
Connecting the headphones using the
audio cable
▷ Connect the 2.5 mm jack plug of the audio cable to the head-
phones' audio socket until it clicks into place. Secure the jack plug
by turning it clockwise.
The flight mode is activated and the Bluetooth connection is dis-
abled.
▷ Connect the 3.5 mm jack plug to the audio output of your smart-
phone.
To disconnect the audio cable:
▷ Turn the jack plug counterclockwise and carefully pull it off.
Using the headphones
MOMENTUM Wireless M3AEBTXL | 29
Connecting the headphones using the
USB cable
When you connect the headphones to a Mac/PC/mobile device
using the supplied USB cable, you can play audio content from your
Mac/PC/mobile device directly through the headphones.
Setting up the headphones as the default audio output device for
your Mac/PC/mobile device
▷ Make sure that the headphones are connected to the Mac/PC/
mobile device using the USB cable.
▷ From the Systems Preferences or Control Panel of your Mac/PC/
mobile device, select “MOMENTUM 3” as the default audio
device.
▷ Start music playback from the Mac/PC/mobile device.
The music is played through the headphones.
Flight mode
2.5 mm
3.5 mm
OFF
Click
The headphones are automatically charged when you connect
them to a Mac/PC/mobile device using the USB cable.
If you are using the USB cable and want to deactivate all wire-
less connections, you have to deactivate Bluetooth on the
headphones (>
17).
Using the headphones
30 | MOMENTUM Wireless M3AEBTXL
Storing and transporting the headphones
Store the headphones in the carry case to prevent damage to the
headphones when you are not using or transporting them.
Care and maintenance
MOMENTUM Wireless M3AEBTXL | 31
Care and maintenance
▷ Clean the non-leather parts of the product only with a soft, dry
cloth
Cleaning and maintaining leather parts
Regularly clean and maintain the leather parts to keep the product in
pristine condition and increase its lifespan.
▷ Gently wipe leather parts periodically with a clean, soft cloth
dampened with water.
▷ Do not use leather polish, detergents or harsh soaps.
▷ Do not store the headphones in a damp or humid environment.
Replacing the ear pads
For reasons of hygiene, you should replace the ear pads from time to
time. Spare ear pads are available from your Sennheiser partner.
To remove the old ear pads:
▷ Pull the ear pad away from the ear cup.
If the retaining ring remains on the ear cup when the ear pad is
removed:
▷ Carefully loosen the retaining ring. If necessary, use a slotted
screwdriver to loosen the retaining ring.
To place a new ear pad on the ear cup:
▷ Assign the ear pads to the right and left side. The seam of the ear
pad has to point downwards.
CAUTION
Liquids can damage the electronics of the product!
Liquids entering the housing of the product can cause a short-circuit
and damage the electronics.
▷ Keep all liquids far away from the product.
▷ Do not use any solvents or cleansing agents.
Care and maintenance
32 | MOMENTUM Wireless M3AEBTXL
▷ Place the ear pad on the ear cup and align it with the notches in
the retaining ring.
▷ Using your thumbs, press the retaining ring firmly onto the ear
cup so that the retaining ring audibly snaps into place all-around.
Information on the built-in rechargeable
battery
Sennheiser ensures and guarantees that the rechargeable battery
performs at its optimum upon purchase of the product. If, upon pur
-
chase or within the warranty period, you suspect that the recharge-
able battery is obviously defective or if a charging error/battery error
is displayed (>
7), stop using the product, disconnect it from the
power supply system and immediately return the product to any
Sennheiser service partner.
Outside the warranty period, you can have the rechargeable battery
replaced for a fee by your Sennheiser service partner. Contact your
local Sennheiser partner:
www.sennheiser.com > “Service & Support”.
Installing firmware updates
Firmware updates can be downloaded free of charge from the Inter-
net using the Sennheiser Smart Control app. Sennheiser recom-
mends to always install the latest firmware version to ensure the
best performance of your product.
▷ Connect the headphones to your smartphone and start the Smart
Control app (>
15).
▷ The app provides information on available firmware updates and
guides you through the installation process.
Click
FAQ/If a problem occurs ...
MOMENTUM Wireless M3AEBTXL | 33
FAQ/If a problem occurs ...
Current list of frequently asked questions (FAQ)
Visit the MOMENTUM Wireless product page at
www.sennheiser.com/download
There you will find a current list of frequently asked questions (FAQ)
and suggested solutions.
Your question has not been answered or the problem persists?
If a problem occurs that is not listed in the FAQ section or if the prob-
lem cannot be solved with the proposed solutions, please contact
your Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at
www.sennheiser.com > “Service & Support”.
Leaving the Bluetooth transmission range
Wireless calling and streaming are only possible in the Bluetooth
transmission range of your smartphone. The transmission range
largely depends on environmental conditions such as wall thickness,
wall composition etc. With a free line of sight, the transmission
range of most smartphones and Bluetooth devices is up to 10 meters.
If you, and therefore the headphones, leave the Bluetooth transmis-
sion range of the smartphone, the sound quality deteriorates
increasingly until you hear the voice prompt “Device (1) discon
-
nected”. At this point, the connection breaks down completely. If you
immediately re-enter the Bluetooth transmission range, the connec
-
tion is automatically re-established.
Deleting the Bluetooth pairing list of the headphones
1. Switch the headphones on (> 16).
2. Press and hold the voice assistant button for 5 seconds.
The headphones are in Bluetooth pairing mode. The LED flashes
blue and red.
3. Press and hold the voice assistant button again for 5 seconds.
The Bluetooth pairing list is deleted. You hear the voice prompt
“Pairing list cleared”. The LED flashes blue 3x. The headphones
then stay in Bluetooth pairing mode.
Restarting the headphones
If the function of the headphones is disturbed, perform a restart:
1. Switch the headphones on (> 16).
2. Press and hold the volume + button for approx. 25 seconds.
5s
Hold
Click
ON
1 2 3
„Pairing list
cleared“
OFF
5s
Hold
FAQ/If a problem occurs ...
34 | MOMENTUM Wireless M3AEBTXL
3. Switch the headphones off and on again.
The headphones are restarted.
Resetting the headphones to the factory default settings/Reset
The Smart Control app allows you to reset the headphones to the
factory default settings (e.g. EQ settings, ANC mode).
If the TILE function is activated (> 28), the TILE settings are not reset.
To reset the TILE settings, deactivate the headphones in the TILE
app.
1 2 3
25s
Hold
Click
ON
OFF
Click
ON
OFF
Specifications
MOMENTUM Wireless M3AEBTXL | 35
Specifications
MOMENTUM Wireless M3AEBTXL
Bluetooth
NFC
Ear coupling circum-aural
Transducer principle dynamic, closed-back
Transducer 42 mm
Frequency response 6 Hz to 22 kHz
Sound pressure level (SPL) 99 dB SPL/-10 dB FS (via Bluetooth)
according to EN 50332-2
118 dB SPL/1 V/1 kHz (via cable)
Impedance active mode: 470 Ω
passive mode: 100 Ω
THD (1 kHz, 100 dB SPL) < 0.3 %
Noise cancellation ANC technology with 4 pick-up
microphones
Pick-up pattern
(speech audio)
2-mic beamforming array
Power supply built-in rechargeable lithium-polymer
battery: 3,7 V, 600-700 mAh
USB charging: 5 V⎓, 330 mA
Charging time of
rechargeable battery
approx. 3 hours
Operating time 17 hours (Bluetooth and ANC
activated)
Temperature range operation: 0 to +55 °C
charging: 0 to +40 °C
storage: –25 to +70 °C
Relative humidity operation: 25 to 75%, non condensing
storage: 10 to 90%
Weight (headphones) approx. 305 g
Magnetic field strength 10.5 mT
Version Bluetooth 5.0 compatible, class 1, BLE
Transmission frequency 2,400 to 2,483.5 MHz
Modulation GFSK, π/4 DQPSK, 8DPSK
Output power 10 mW (max)
Profiles HSP, HFP, AVRCP, A2DP, DIS, BAS
Codec aptX, aptX LL, AAC, SBC
Device name MOMENTUM 3
LE-MOMENTUM 3 (Bluetooth Low
Energy only)
Frequency 13.56 MHz
Modulation ASK
Output power within 500 μV/m
Manufacturer Declarations
36 | MOMENTUM Wireless M3AEBTXL
Manufacturer Declarations
Warranty
Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months
on this product.
For the current warranty conditions, please visit our website at
www.sennheiser.com or contact your Sennheiser partner.
In compliance with the following requirements
• General Product Safety Directive (2001/95/EC)
•Compliant to Sound Pressure Limits according to country spe-
cific requirements
EU declaration of conformity
• RoHS Directive (2011/65/EU)
Hereby, Sennheiser electronic GmbH & Co. KG declares that the
radio equipment type M3AEBTXL is in compliance with the Radio
Equipment Directive (2014/53/EU).
The full text of the EU declaration of conformity is available at the fol-
lowing Internet address: www.sennheiser.com/download.
Notes on disposal
• WEEE Directive (2012/19/EU)
• Battery Directive (2006/66/EC & 2013/56/EU)
The symbol of the crossed-out wheeled bin on the product, the bat-
tery/rechargeable battery (if applicable) and/or the packaging indi-
cates that these products must not be disposed of with normal
household waste, but must be disposed of separately at the end of
their operational lifetime. For packaging disposal, please observe the
legal regulations on waste segregation applicable in your country.
Further information on the recycling of theses products can be
obtained from your municipal administration, from the municipal col
-
lection points, or from your Sennheiser partner.
The separate collection of waste electrical and electronic equip-
ment, batteries/rechargeable batteries (if applicable) and packag-
ings is used to promote the reuse and recycling and to prevent neg-
ative effects caused by e.g. potentially hazardous substances
contained in these products. Herewith you make an important con
-
tribution to the protection of the environment and public health.
Trademarks
Sennheiser is a registered trade mark of
Sennheiser
electronic GmbH & Co. KG.
Apple, the Apple logo, iPhone, iPod, iPod touch, iPad, and Siri are
trademarks of Apple Inc., registered in the U.S. and other countries.
App Store is a service mark of Apple Inc. The trademark “iPhone” is
used with a license from Aiphone K.K.
The Bluetooth® word mark and logos are registered trademarks
owned by the Bluetooth SIG, Inc. and any use of such marks by Senn
-
heiser electronic GmbH & Co. KG is under license.
The aptX mark and the aptX logo are trademarks of CSR plc or one of
its group companies and may be registered in one or more jurisdic
-
tions.
Android and Google Play are registered trademarks of Google Inc.
Manufacturer Declarations
MOMENTUM Wireless M3AEBTXL | 37
The N-Mark is a trademark or registered trademark of NFC Forum,
Inc. in the United States and in other countries.
Amazon, Alexa and all related logos are trademarks of Amazon.com,
Inc. or its affiliates.
TILE and the TILE design are trademarks of Tile, Inc.
Other product and company names mentioned in the user documen-
tation may be the trademarks or registered trademarks of their
respective holders.
Open Source license terms and conditions
FIPS 180-2 SHA-224/256/384/512 implementation
Last update: 02/02/2007
Issue date: 04/30/2005
HMAC-SHA-224/256/384/512 implementation
Last update: 06/15/2005
Issue date: 06/15/2005
Copyright (C) 2005, 2007 Olivier Gay <olivier[email protected]>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the doc
-
umentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its con-
tributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRAN
-
TIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRAN-
TIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDI
-
RECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROF
-
ITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIA
-
BILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARIS-
ING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
